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 년도별 목차보기 |
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| 발행년도/권호 |
1995 년 / 권호: V.7,no.4,Dec |
| 논문제목1(원어) |
2가 양이온이 폴리에틸렌 텔레프탈레이트 직물의 알칼리 가수분해에 미치는 영향 |
| 논문제목2(타언어) |
Effects of Divalent Cations on Alkaline Hydrolysis of Poly(ethylene terephthalate) Fabr |
| 저자(원어) |
Dho, Seong Kook (Dept. of Natural Fiber Science, Dong-A Univ., Pusan, Korea) Choi, Chin Hyup (Dept. of Natural Fiber Science, Dong-A Univ., Pusan, Korea ) |
| 저자(타언어) |
Dho, Seong Kook (Dept. of Natural Fiber Science, Dong-A Univ., Pusan, Korea) Choi, Chin Hyup (Dept. of Natural Fiber Science, Dong-A Univ., Pusan, Korea) |
| 소속(원어) |
Dho, Seong Kook (Dept. of Natural Fiber Science, Dong-A Univ., Pusan, Korea) Choi, Chin Hyup (Dept. |
| 소속(타언어) |
Dho, Seong Kook (Dept. of Natural Fiber Science, Dong-A Univ., Pusan, Korea) Choi, Chin Hyup (Dept. |
| 시작/끝
페이지 |
61 ~ 73 총페이지 : 13 |
| 언어(원어) |
Korean |
| 초록 |
Inorganic salts have negative or positive effects on the rates of many chemical reactions and also the rates of acidic and alkaline hydrolysis of carboxylic esters. The direction of salt effects on the hydrolysis of ester depends on the charge of esters. It is expected that the rate of the alkaline hydrolysis of Poly(ethylene terephthalte)(PET), polymeric solid carboxytic polyester with carboxyl end group at the polymer end, is also influenced by inorganic salts. In the present work, to clarify the effect of divalent cations on the alkaline hydrolysis of PET, many salts with divalent cations like were added to the aqueous alkaline solutions. Then PET was hydrolyzed with aqueous NaOH solution having many salts under various conditions. Some conclusions obtained from the experimental results were summarized as follows. Many salts with various divalent cations increased or decreased the reaction rate of alkaline hydrolysis of PET depending on their electrophilicity, hydration property, ability of ion pair formation, solubility, and the degree of interactions between divalent cations and anions, etc. The hydrolysis was interrupted in the order of $Ca^{+2}and the decrease in the ΔGthat the divalent cations and attracted by PET increased the collision frequency between carbonyl carbon and ion and then accelerated the reaction rate. and decreased the reaction rate because of their strong interaction with |
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